US64974A - Henry g - Google Patents

Description

H G. &; E.- L. HALL.

Plow-Point. No. 64,974. Patented May 2l, 1867..

N.PE\ERS. PHOTO-UTHOQRAFHER. wAsHxNGmN, D. C

@stuiten tste getraut @fitta HENRY AND E. L. HALL, 0F PUTNAM, OHIO Lam Patent No. 64,974, @zaad May 21, 1867.

j` menons.

TO ALL WHOM "IT MAY CONCERN:

Be it known that we, HENRY G. HALL and E. L. HALL, of Putnam, in the county of Muskingum, and State of Ohio, have invented a new and useful improvement inPlough-Points and Shares; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, and in which- Figure 1 shows the detached point of a plough with our improvements. Figure 2 shows the cutting-peint andiy the means of attaching the cap at its extremity. Figure 3 shows the means of attaching the cutting-point to the plough-point. Figures 4, 5, and 6 show the method of fastening the side-plate and the coulter to the plough. Figure 7 shows a self-sharpening pointf p Figure 8 shows a method of attaching a'self-sharpening point to the plough. Similar letters of reference indicate corresponding parts in the several gures.. The object of this invention is the construction of a` plough-point, the cutting extremity and cutting edge of which shall be detachable, so that they maybe removed when worn out. i i v In the drawings, A represents thepoint of a plough detached from the plough, and having a side-plate, B, i which forms the cutting edge, and a point, C, which forms the anterior and cutting extremity of the ploughpoint. The side-plate and cutting-point are independent pieces of metal, of the proper shape for their purpose',

and made so as to be easily attached or removed, as may be desired. The side-plate B we make of wrought or ehilledviron-or steel, with a side-iiauge, b, upon which the edge 'of the 'plough-point A rests,.and to which it is attached. At the point where' the ange b leaves the side-plate, the edge ofthe latter, rising above the-flange, is bevelled inward or dove-tailed. rlhe outer edge ofthe plough-point is bevelledin the opposite direction and ts under the projecting shoulder of the side-plate to' insure greater strength and a more perfect union ofthe parts. The side-plate is further secured to Ythe plough-point by two or more hooked or shouldered pins, b b', attached to the side-plate and acting in the 4slots in the plough-point. We fasten the pin in its place sonietimes by means of a little' key,d, running under the shoulder or hook of the pin and preventing the latter from being withdrawn while the key is in that position; the key when in place fitting smoothly into a little hed in the surfaceof the metallic board, so as to form an even, smooth` surface, and sometimes by means of a pin shouldered er hooked in `the oppositedirection, .the hoek or shoulder passing over and resting upon a little-ledge, e, in the wall of the slot,- and the pin being confied in'v that position by means of a wedge, e, as shown in the drawing, or by any other method of fastening that will answer the purpose. rlhe cutting-point C is composed of two parts, a shank, c, of wrought iron, and a cap or false point, c', of cast iron, cast upon the end ofthe shank, the latter being dove-tailed or furnished withv projecting shoulders, c c, so that when the casting has been made the cap cannot come ofi'. Theshank of the cutting-point thus formed is the means by which it is held in its place in the plough-point A, running into a dove-tailed groove, a, in the plough-point, and keyed or wedged in by means of alittle wedge behind the shoulderfunder the plough.

We do not-claim a mortise-socket, for that has been already patented, and besides it does not accomplish our purpose as we desire; but we use a groove or bed cast in the-under surface of the plough-point, having dovetail edges to confine the shank c, and running nearly back to the shoulder f, beneath which is an opening on a level with the bottom of the bed to admit the passage of the wedgewhich confines the shank c in the bed. The 4cutting-point C may be made reversible or self-sharpening. When this is the case, the extremity of it, which is of" cast iron, must he made in the shape of a wedge, with equally inclined surfaces; the edges of the shank must be made symmetrical; .and the edges of the bed in the plough-point must be made so aste fit the shank Aand holdit firmly whichever side of the shank may happen to he uppermost. yThis can be accomplished in several ways; as, for instance, by making the dove-tail edges of the bed not straight, but in the shape of a groove which shall be the arc of a circle or of' any' other symmetrical figure, and making the edges of the shank c to correspond with the groove.

'We do not limit ourselves to.the use off the straight edges shown in the drawings, but may use any ofthe methods of constructing the dove-tail edges which wel have referred to,.or which we may find best adapted 'to secure the shank firmly', and yet t0 permit of its being reversed for self-sharpening. The cap c may be chilled for greater durability. We also construct :t cutter or coulter, H, of cust or chilled iron or steel, in a separate piece, and attach it t-o the plough-point in such a, manner that it inuy be removed und replaced with :t new one when worn out. The cutter or Coulter may be for this purpose fastened to the plough-point by a, similar arrangement of' pins, keys, and slots to thatabove described for fastening the side-piste-B to the plough-point, or any other suitable fastening may be used instead.

Our invention is designed Vto apply to plough-points marie independent of', and detachable from, the mouldboard or body of the plough, and the whole plough-point or share, when the invention is attached to it, may be fitted to and used upon any of' the varieties of' ploughs now in use.

Having thus described our invention, what we claim ns new, und desire to secure by LettersPutent, s-

1. The detachable side-plate B of the plough-point A, substni'itinlly unsl und for the purpose specified.

2. The cutting-point C, composed of a. wroughtiron shank, c, und a. cil-st or chilled-iron cap, c', substantially as and for the purpose described. l l

3. The method above described of attaching the side-plate i3 to the plough-point A by menus of shouldered pins b projecting from the side-plate B into slots in the body of the plougivpoint, where the shoulders of thc pins rest on ledges or keys in the wells of the slots, substantially as and for the purpose specified.

4. The method of attaching the shank c to the plough-point A, above described.

V5. The independent cutter or coulter H, substantially es and for the purpose described.V

6. The construction of the cutting-point C and the groove or bed a, as l.there described, so that the cuttingpoint may be self-sharpening, substantially ns and for the purpose specified.

H. G. HALL,

E. L. HALL.

"itnes'ses for H. G. HALL:

JAMES H. GRIDLEY, CHAS. A. PETTIT.

Witnesses for. E. L. HALL: CEAS. C. WILEs,

H. M. BISHOP.

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